Home / 1,580.28-2,370.42-1,291.92

Finding the Fourth Proportional to 1,580.28, 2,370.42 and 1,291.92

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Solution

The fourth proportional to 1,580.28, 2,370.42 and 1,291.92 is: 1,937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.28 : 2,370.42 = 1,291.92 : x
  2. Step 2: Convert to fraction form
    1,580.28/2,370.42 = 1,291.92/x
  3. Step 3: Cross multiply
    1,580.28x = 2,370.42 × 1,291.92
  4. Step 4: Simplify right side
    1,580.28x = 3,062,393.01
  5. Step 5: Solve for x
    x = 3,062,393.01/1,580.28
  6. Step 6: Final answer
    x = 1,937.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.